蹴鞠是古代清明节人们喜爱的一种游戏。

A.Cuju, a kick-ball game, was popular to play on Tomb-sweeping Day in ancient China.

B.Cuju was a popular game to play on Tomb-sweeping Day in ancient China.

正确答案：Cuju, a kick-ball game, was popular to play on Tomb-sweeping Day in ancient China.